Spindle brake



C. R. HALL SPINDLE. BRAKE July 17, 1962 Filed Nov. 1, 1960 x Unite States ice 3,044,248 SPINDLE BRAKE Clarence R. Hall, Bradford, N.H. Filed Nov. 1, 1960, Ser. No. 66,524 3 Claims. (CI. 5788) This invention relates to a spindle brake, and more particularly to a spindle brake for a textile machine such as a spinning machine.

The object of the invention is to provide a spindle brake which is adapted to be conveniently manually actuated in order to quickly and readily stop the rotation of the spindle.

Another object of the invention is to provide a spindle brake for a textile spinning frame wherein when the brake of the present invention is actuated the spindle will be stopped very quickly so that for example when yarn breaks, the yarn can be quickly pieced together so that there will be less down time and hence more economical and efiicient operation of the spinning frame.

Another object of the invention is to provide a spindle brake which 'is self-adjusting for wear on the lining due to the provision of a novel eccentric actuating mechanism.

A still further object of the invention is to provide a spindle brake which is extremely simple and inexpensive to manufacture.

Other objects and advantages will be apparent during the course of the following description.

In the accompanying'drawings, forming a part of this application, and in which like numerals are used to designate like parts throughout the same.

FIGURE 1 is an elevational view illustrating the spindle brake of the present invention, and with parts broken away and in section.

FIGURE 2 is a sectional view taken on the line 2-2 of FIGURE 1.

FIGURE 3 is a sectional view taken on the line 33 of FIGURE 1.

FIGURE '4 is a sectional view taken on the line 44 of FIGURE 1.

FIGURE 5 is a sectional view taken on the line 5-5 of FIGURE 1.

FIGURE 6 is a fragmentary perspective view showing certain of the parts disassembled.

FIGURE 7 is a plan view of the actuator.

Referring in detail to the drawings, the numeral 10 indicates a portion of a spinning frame of conventional construction which is provided with the usual spindle 11 thereon, FIGURE 1, and the spindle 11 includes a base 12, and the numeral 13 indicates a neck which has annular shoulders 14 and 15 on opposite sides thereof.

According to the present invention there is provided a spindle brake which is indicated generally by the numeral 16, and the numeral 17 indicates a support member which is mounted on the frame 10. A block 18 is positioned immediately above the support member 17, and the support member 17 is provided with a reservoir or chamber 23 for holding a quantity of a lubricating medium such as oil or grease, and there is provided an opening 20 which communicates with the reservoir 23 whereby the lubricating medium can be conveniently supplied to the reservoir 23 when the reservoir 23 is empty. A closure 21 is pivotally connected to the support member 17 by means of a pivot pin 22, and the closure 21 is mounted for movement into and out of opened and closed relation with respect to the opening 20 so that when the reservoir 23 is to be supplied with lubrication, the closure 21 can be pivoted to an out-of-the-way position with respect to the opening 20 due to the provision of the pivot pin 22, and after the desired quantity of lubricant has been supplied to the reservoir 23, the closure 21 can be returned to a position as for example as shown in FIGURE 1. The

block 18 includes depending flanges or side wall portions 19 that are arranged contiguous to the opposite sides of the support member 17.

The numeral 24- indicates a body member which is mounted above the block 18, and the body member 2'4 includes a rounded end portion 25 that is provided with a centrally disposed bore 32, and the bore 32 includes upper and lower sections 26 and 27 of ditterent diameters, and the numeral 28 indicates a shoulder pin which includes a head 29 that is snugly seated in the upper section 26 of the bore 32. The shoulder pin 28 further includes a cylindrical portion 30 which is seated in the lower section 27 of the bore 32, and the shoulder pin 28 further includes a lower reduced diameter threaded portion 31 which threadedly engages the block 18.

As shown in the drawings the body member 24 includes an enlarged portion 33 which is continuous to the rounded end portion 25, and the enlarged portion 33 includes separate halves or segments 34, and the numeral 35 indicates a shank portion which is contiguous to the enlarged portion 33, and the shank portion 35 terminates in a pair of spaced apart arcuate arms 36. Brake linings 37 are secured to the inner surfaces of the arms 36, as for example by means of securing elements such as the rivets 38. The shank portion 35 and enlarged portion 33 are provided with a' slot or cutout 39, FIGURE 6; The slot 39 is enlarged as at 40, and the enlarged portion 40 is arranged in the center of the enlarged portion 33. The numeral 41 designates a pair of pins which extend upwardly from the enlarged portion 33 on opposite sides of the opening 40 for a purpose to be later described.

There is also provided an actuator which is indicated generally by the numeral 42, and the manually operable actuator 42 includes a handle or lever portion 43 which embodies sections 44 and 45 that are arranged atright angles with respect to each other, and the actuator 42 further includes a circular plate portion 46 which is provided with a central aperture 48 as well as a pair of spaced apart arcuate grooves or slots 47. The pins 41 are adapted to project through the grooves 47 when the parts are in their assembled positions.

The numeral 49 indicates a pivot pin member, and the pivot pin member 49 is provided with an enlarged head 50 on its upper end which is arranged contiguous to the upper surface of the plate portion 46. The pivot pin member 49 further includes a cylindrical section 51 which extends through the aperture 48', and the cylindrical section 51 also extends through the opening 40 in the body member 24, and the cylindrical section 51 also extends through an aperture 53 in the block 18, and the pivot member 49 further embodies a depending threaded portion 52 which threadedly engages the support member 17.

'From the foregoing, it is apparent that there has been provided a spindle brake which is adapted to be used on textile equipment such as a spinning frame, and with the parts arranged as shown in the drawings, it will be seen that when the spindle is to be stopped, the handle portion 43 of the actuator 42 can be manually moved about an axis which extends through the pivot pin member 49. The actuator 42 includes the plate portion 46 which has the pair of arcuate grooves 47 therein, so that as the actuator 42 is manually moved or pivoted about the pin member 49, the eccentric grooves 47 will coact with the pairs of pins 41 so as to exert pressure on these pins 41 which in turn will cause the pair of arms 36 to move together so that the brake linings 37 will be moved into gripping or frictional engagement with the neck portion 13 of the spindle 11 so that rotation of the spindle will be stopped. The body member 24 is made of a material which has inherent resiliency such as a metal having a slight amount of springiness therein, so that when manual pressure is released on the actuator 42, the parts will be turned to their neutralposition and wherein the inherent resiliency of the'arms 36 will cause the arms 36 to move slightly away from the neck portion 13 so that since the brake linings 37 are fastened to the arms 36 as at 38, the brake linings 37 will also be moved out of engagement with the neck portion 13. Thus, as long as no manual pressure is applied to the handle portion 43 of the actuator 42, there will be no interference of normal rotation of the spindle, but when finger pressure is applied to the actuator 42, rotation of the spindle will be stopped or arrested.

The shoulder pin 28 includes the head 29 and cylindrical portion 30 and lower threaded portion 31, and the lower threaded portion 31 threadedly engages a suitable threaded aperture in the block 18, while the head 29 of the pin 28 is seated in a countersunk recess 26 in the rounded end portion of the body member 24, and the cylindrical portion of the shoulder pin 28 extends through the section 27 of the bore 32, as for example as shown in FIGURE 1 so that the shoulder pin 23 provides a means for anchoring the body member 24- to the block 18.

Lubrication can be supplied to the chamber 23 by manually pivoting or moving the closure or plate 21 due to the provision of the pivot element 22 whereby oil, grease or the like can be supplied through the passageway 29 and into the reservoir 23 in order to provide a convenient source of supply of lubrication for the various par-ts.

The pivot pin member 49 includes the head 50 which is arranged just above the plate portion 46 of the actuator 42, and the pivot pin member 49' also includes the portion 51 which extends through the aperture 48 in the plate portion 46, and the portion 51 also extends through the opening 40 in the body member 24, and the portion 51 also projects through a registering aperture or opening 53 in the block 18, and the pin member 49 has a lower threaded end 52 which threadedly engages a threaded aperture in the support member 17 and the pin member 49 thus functions as a pivot for the actuator 42 and in addition serves to help maintain the parts in their proper assembled position or relationship with respect to each other.v The block 18 includes the depending side walls 19 which are arranged on opposite sides of the support member 17 and these side walls 19 help maintain the block 18 in its proper position on the support member 17 so that accidental shifting thereof is prevented.

The parts can be made of any suitable material and in different shapes or sizes.

The brake of the present invention is adapted to be used on a spindle of a spinning frame and will operate in a highly eificient manner. 7

The pins 41 are adapted to be made of hardened steel or the like, and the member 21 provides a trap for oiling. FIGURE 1 shows the brake attached to the spindle and wherein the spindle may be used on a spinning frame in a woolen mill or the like. The brake lining 37 is made in two pieces.

Due to the greater speed that spinning frames are being run at the present time in order to meet competition and the like, a more efiicient brake than those available is necessary. For example when the yarn break the quicker the yarn is pieced together the less waste or down time will result so that more economical and efficient operation of the spinning frame can be accomplished.

The brake of the present invention will stop the spindle almost immediately and the brakes will be locked in stopped position to permit almostinstant piecing of broken ends of the yarn. The brake is self-adjusting'for wear on the linings due to the provision of the eccentric grooves 47 and pins 41. As the handle 43 of the actuator 42 is turned in the proper direction, due to the provision of theslots or grooves 47 which arein the plate 46, the brake bands 37 will be closed on the neck portion 13,

and when the handle is released, contact is on the rise of the eccentric so as to cause an instant release of the bands so that there will be very little drag on the spindle.

Attention is directed to FIGURE 7 wherein it will be noted that the slots 47 at the rise as indicated by the numerals 58 are spaced at a greater distance from the pivot point that at the drop 57. Thus when the handle or actuator 4-2 is turned in a clockwise direction, FIGURE 7, pressure Will be applied on pins such as the pins 41 from the outside of the slots 47, and since the slots are closer to the pivot point at the drop ends 57, the two segments 34 will be closed and the brake will be applied. When the handle 42 is actuated or turned in a counter clockwise direction, pressure is applied on the inside of the pins 41 and due to the rise 58 of the slots, the segments will be released and the brake will be released.

If the handle of the actuator is turned over to the opposite face or opposite side, it will operate in the opposite direction. However, after the device has been assembled, it will work in only one direction, depending upon which way it is assembled.

The oil reservoir 23 is not part of the brake mechanism of the present invention and the reservoir 23 is merely a reservoir on the spindle which can provide lubrication for the spindle bearings, as for example through a passageway or channel 56. The block 18 is supplied with an opening 20 which is behind the trap door or closure 21 so that access can be gained to the reservoir 23 through the opening 20 and also this construction permits visual viewing when oiling is being accomplished. There parts are arranged so that when adapted to any spindle there will be the same oil levelwhen full as the manufacturer deems necessary for proper lubrication. The trap door 21 keeps lint, dirt, and other foreign matter from contaminating the oil and harming the spindle bearings.

Minor changes in shape, size and rearrangement of details coming within the field of invention claimed, may be resorted to in actual practice, if desired.

What is claimed is: a

1. In a spindle brake, a spinning frame, a support member on said frame, a block mounted on said support member and said block including spaced parallel vertically disposed depending flanges engaging side portions of said support member, a body member mounted above said block and said body member including a rounded end portion provided with a vertically disposed bore that includes upper and lower sections of different diameters, a shoulder pin including a head seated in the upper section of said bore, said shoulder pin further including a cylindrical portion seated in the second section of said bore, said shoulder pin further including a reduced diameter lower threaded end portion threadedly engaging said block, said body member further including an enlarged portion contiguous to saidrounded end portion, a shank adjacent said enlarged portion and said shank terminating in a pair of arcuate arms, linings fastened to the inner surfaces of said arms, there being a slot in said shank and, enlarged portion, a portion of said slot being of increased size in the center of said enlarged portion, a pair of pins extending upwardly from the enlarged portion on opposite sides of said slot, an actuator comprising a handle portion and a circular plate portion, there being a central aperture in said plate portion, said plate portion being provided with a pair of spaced apart arcuate grooves for the projection therethrough of said last named pins, and a pivot pin member having a head on its upper end contiguous to the upper surface of said actuator, said pivot pin member further including a cylindrical section extending through the aperture in said plate portion and through a registering aperture in said block, and said pivot pin member including a depending threaded portion threadedly engaging said'support member.

2. A spindle brake comprising a support member, a

block mounted onsaid support member, and said blockincluding spaced parallel vertically disposed depending flanges engaging side portions of said support member, a body member mounted above said block and said body member including a rounded end portion provided with a vertically disposed bore that includes upper and lower sections of different diameters, a shoulder pin including a head sea-ted in the upper section of said bore, said shoulder pin further including a cylindrical portion seated in the second section of said bore, said shoulder pin further including a reduced diameter lower threaded end portion threadly engaging said block, said body member further including an enlarged portion conti uous to said rounded end portion, a shank adjacent said enlarged portion and said shank terminating in a pair of arcuate arms, linings fastened to the inner surfaces of said arms, there being a slot in said shank and enlarged portion, a portion of said slot being of increased size in the center of said enlarged portion, a pair of pins extending upwardly from the enlarged portion on opposite sides of said slot, an actuator comprising a handle portion and a circular plate portion, there being a central aperture in said plate p'or- 20 tion, said plate portion being provided with a pair of spaced apart arcuate grooves for the projection therethrough of said last named pins, and a pivot pin member having a head on its upper end contiguous to the upper surface of said actuator, said pivot pin member further including a cylindrical section extending through the aperture in said plate portion and through a registering aperture in said block, and said pivot pin member including a depending threaded portion threadedly engaging said support member.

3. In a spindle brake, a support member, a block arranged above said support member, a body member operatively connected to said block, said body member including spaced apart arms having linings on their inner surfaces, a manually operable actuator operatively connected to said body member, said actuator embodying a plate portion having arcu'ate grooves therein, and spaced apart pins on said body member extending through the grooves in said plate portion.

Buscher Apr. 12, 1932 Stahlecker Mar. 15, 1960 

